Chair



(No Model.)

W. BOSOAWE N.

CHAIR.

Patented Nov. 3, 1885.

WIT/V58 Lam By Attorney UNlTFD Stains PATENT @rrrcs.

WILLIAM BOSCAYVEN, OF NEW YORK, N. Y., ASSIGNOR TO DANIEL L.

THOMPSON, CHARLES A. PERLEY, AND GILMAN \VAITE, OF BALD- XVINSVILLE, MASSACHUSETTS.

CHAIR.

SPESIPZCATION forming part of Letters Patent No. 329,805,61ated November 3, 1885.

Application filed February 4, 1885. Serial No. 154,891. (No model.)

in all whom it may concern,

Be it known that I, ViLLmir BOSOAWEN, of the city, county, and State of New York, a citizen of the United States, have invented a new and useful Improvement in Chairs; and I- declare the following to be a full, clear, and exact description ofthe same, reference being bad to the accompanying sheet of drawings, forming part of this specification.

This invention has for its object an improvement in convertible chairsthat is, chairs that maybe converted from a high chair to a low chair and carriage; and the invention consists in a convertible chair so constructed that its back posts form slideways whereon the seat of the chair may slide up and down, and form also the push-handle and front legs or support of the chair; and the invention still further consists in a convertible chair having a sliding chairseat in combination with guideways whereon the seat may slide up and down; and the invention also consists in slideways formed by the back posts of a chair and a sliding seat in combination with wheels or rollers whereon the seat is directly or indirectly supported in its lowest position, all of which is with greater particularity hereinafter shown, described, and claimed.

In the accompanying sheet of drawings, Figure 1 is a side elevation showing the seat in its highest position for a high chair; Fig. 2, a front view of same; Fig. 3, a side elevation, partly in section, showing the seat in its lowest position; Fig. 4., a detailed view in section, showing grooves in back post and stud entering therein.

Similar letters of reference indicate like parts in the several figures.

As before stated, this invention relates particularly to convertible chairs, so called, or chairs that are constructed to be converted from a high to a low chair and carriage. Numerous chairs of this class have heretofore been made, but all or nearly all of them have depended upon pivoted legs or hinges as means for converting the chair from its highest to its lowest position. By this invention, however, pivoted legs and hinged joints are dispensed with, as will be seen from the following description, wherein A represents the slides of my chair as well as the back posts and front legs of the same, all of which func tions they possess. Into the inner surfaces, (1 of these slides A are formed grooves B, and to the rear of the slides A are fixed the back legs, 0, of the chair, the lower ends of these back legs being provided with wheels D, which support the ends of the back legs from the floor. The slides A may as a matter of convenience be somewhat inclined, as shown in Figs. 1 and 3; but they may be also made vertical in some instances, if desired. The upper portion of the slides A extend sufficiently to form a pushhandle for the chair when its seat is in its lowest position, as in Fig. 3, and the lower ends of these slides extend nearly to but not in contact with the floor when the chair-seat is in its lowest position; but these lower ends are in contact with the floor when the seat is in its raised position, and then constitute the front legs of the chair, as in Figs. 1 and 2.

The chair-seat E may be of any desired form and size, and may be provided with the ordinary back, 0, and arms d. To the rear part of the seat-frame, and on each side of the same, is fixed a stud, c, Fig. 3, which studs enter into the grooves B in the slide, A. Beneath the chair-seat E is a bracket, F. The rear portion of this bracket F has fixed to it studs 9, which studs enter into the grooves B in the slides A. To this bracket Fthe seat E of the chair is attached, either by means of springs G or otherwise, and the lower side of the bracket is provided with wheels or rollers H, so that when the seat of the chair is in its lowest position it will be supported on the floor wholly by the wheels H and D, and can then be wheeled from place to place. When the bracket F is secured to the seat-frame E by means of the springs G, the front part of the bracket may extend upward to form stops h, to receive the seat in the event of the springs being unduly weighted.

Now, when my chair is constructed substantially as shown in the drawings and above described, its operation is as follows: To convert the chair to a high chair, the seat E is simply pulled upward, so that it will slide on the slides A. The studs ewithin the groov B assist in guarding the seat in its sliding motion, and at the same time confine the seat to the slides A, and as the seat is in this way pulled upward the bracket F, being united with the seat, is in like manner raised, and the studs 9 of the bracket F guide its upward movement in the grooves 13, and also confine the bracket to the slides A, and as the seat and bracket are in this way elevated the wheels H are raised from the floor, permitting thereby the lower ends of the slides A to rest thereon and make the chair stable on its supports. In this way the seat of the chair and its bracket are raised until they have arrived at the desired height, in which position they are held by stops 70. ot any convenient construction. To transform the chair from its highest to its lowest position, or to make of it a carriage, the bracket F is disengaged from the catch k, the bracket and seat permitted to slide downward on the slides A until the wheels H are brought in contact with the floor, in which position the lower end of the slides A are raised from the floor, so that the chair is supported on the floor solely by the wheels D and H, and can be trundled from place to place. est position of the seat the bracket F engages with catches m, of any convenient form and structure, and these catches maintain the seat in its lowest position, resting only on the wheels D and H; but these catches m may in some cases be dispensed with, since the weight of the occupant of the chair will usually keep the wheels H in contact with the floor and the lower ends of the slides raised therefrom, as in Fig. 3.

I do not wish to confine myself to the particular form of bracket shown in Figs. 1 and 3, as brackets of other construction may be used as, for instance, simple cleats beneath the seat-frame. When the seat E is in its lowest position, the upper part of the slides A project sufficiently to form a push-handle, by means of which the chair can be propelled as a carriage.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with the slides A and wheels D, connected therewith, of the seat E,

In this lowits bracket F, and attached wheels H, substantially as specified.

' 2. The combination,with the slides and their attached wheels, of the seat provided with a pair of. wheels, and adapted to slide on and be secured in different positions upon said slides, substantially as described.

3. The combination, with the slides A, having the grooves B, and stops or catches, of the seat and its supporting-bracket having studs engaging said grooved slides, and adapted to engage said stops or catches, and wheels upon the said slides and bracket, substantially as described.

4.. The inclined slides A, combined with the seat adapted to move up or down said slides,

means to lock said seat in different altitudes V and movable up and down said slides, and

means to retain it in given position thereon,

substantially as described.

6. The slides A, having the rear legs, 0, and wheels D, combined with the seat E, its bracket F, engaging and movable up and down said slides, and means to retain it in position, and the spring G, connecting the seat and bracket, substantially as described.

7. The slides A, having the rear legs, 0, and wheels D, and extended to form push-handles, combined with the seat E, itsbracket F, engaging and movable up and down said slides, and means to retain it in position, and the spring G, connecting the seat and bracket, substantially as described.

8. The slides A, having the rear legs, 0, and wheels D, combined with the seat E, its bracket F, engaging and movable up and down saidslides, and means to retain it in position, the stops h, wheels H, and the spring G, connecting the seat and bracket, substantially as described.

W. BOSGAWEN.

' In presence of- G. M. PLYMPTON, D. A. CARPENTER. 

